Effect of Milling Time on the Microstructure of Ti35Nb2. 5Sn5HA Biocomposite Fabricated by Powder Metallurgy

摘要：

A novel Ti-35Nb-2. 5Sn/5Hydroxyapitite(HA) biocompatible composite was fabricated by pulsed current activated sintering (PCAS) at 1100 °C under 60 MPa. The raw powders were high energy mechanical milled (HEMM) for 0 h,4 h,8 h and 12 h. The effect of milling time on the morphologies of Ti35Nb2. 5Sn/5HA powders and microstructures of composite were studied. Results indicated that ball milling for 8 h led to o phase starting to transform into β phase and after milled for 12 h the powders contained only β phase. After milled for 12 h, the particle size of the powders was about 200 nm and the grain size of sintered composite was about 50nm. As the increase of ball milling time both hardnesses and relative densities of the sintered composites were increased.

关键词： TiNbSn/HA composite microstructure milling time hardness

作者: Xiaopeng Wang Yuyong Chen Lijuan Xu Shulong Xiao Kee-Do Woo

作者单位: School of Material Science and Engineering,Harbin Institute of Technology,Harbin 150001,China Division of Advanced Material Engineering and Research Center of Advanced Materials Technology,Chonb

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 2139-2141

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）